Installation Guide
Table Of Contents
- Welcome
- Audience
- Related Documentation
- FCC Notice
- RF Statements
- EMC and Safety Statements
- 1. Introduction
- 2. Installing Components and Troubleshooting
- 3. Pole Mount Installation
- 4. Pad Mount Installation
- Introduction
- Required Tools
- Installation Location
- Preparing the Transformer Pad
- Preparing for Installation
- Performing the Installation
- Extend Pad Mounting Bracket
- Attach Pad Mounting Bracket to Lifting Nut
- Attach Conduit Housing to Pad Mounting Bracket
- Insert Conduit Thread into Conduit Housing
- Attach ECN to Pad Mounting Bracket
- Secure ECN to Pad Mounting Bracket
- Connect the ECN to Power and the Network
- Close and Lock the Conduit Housing
- Complete the Installation
- Verifying Successful Installation
- 5. Field Replacement for an ECN 7000 Series Device
- A. ECN 7000 Series Specifications
- B. Safety and High-Voltage Warnings
- C. ESD and Battery Warnings
ECN 7000 Series Hardware Guide 11
processor can monitor the health of each of the expansion cards through the USB
interface.
Internal Sensors
The ECN includes internal sensors to detect removal of the external cover,
change in the title angle of the unit, internal temperature, secondary voltage, and
current.
Enclosure Cover Removal Sensor
The ECN includes a reed switch that is mounted in the enclosure cover for
sensing removal of the enclosure cover. When the enclosure cover is removed, the
measurement processor raises an alarm that you can monitor remotely.
Cover switch sensing continues to operate when power is removed.
Tilt Sensor
The ECN includes a ball bearing tilt sensor that is mounted on the ECN main
processor card for sensing changes in tilt angle of the unit. This sensor allows
you to determine remotely if the ECN has fallen from or been removed from its
pole or pad mounting. When the tilt angle exceeds 30º, the sensor triggers an
alarm.
The detection circuitry is monitored by the measurement processor after power is
removed.
The tilt sensor is available as a factory option.
Temperature Sensor
The ECN includes an internal temperature sensor that provides a linear output
voltage proportional to local temperature, from –55 ºC to +130 ºC. This sensor is
monitored directly by the measurement processor.
Temperature measurements are used to compensate the real-time clock and
power supply voltages. They can also be used to generate alarms in the event
that the internal temperature approaches maximum permissible levels.
If the internal temperature of the ECN enclosure exceeds the maximum
operating limits (105 ºC), a protection circuit turns off the main power. This
shutdown protects the electronics within the enclosure and also prevents the
ECN from reaching unsafe temperature levels.
Secondary Voltage Sensing
The ECN power supply system card includes isolated voltage transformers that
card are connected to the ECN line inputs. Each transformer provides a low
voltage signal that is proportional to the line voltage, with signal amplitude of 5
V
p-p
at 300 V
AC
. Voltages above and below the power supply rail limits are
clamped by protection devices on the power supply card.
The motherboard backplane connects the low voltage signals to the ECN power
supply system card and the ECN main processor system card. The measurement